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Ber [7]
2 years ago
7

Simplify: -3x2 + 5x -22 + 4x2 - 9x

Mathematics
1 answer:
DiKsa [7]2 years ago
5 0

Answer:

B

Step-by-step explanation:

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Use the trigonometric subtraction formula for sine to verify this identity: sin((π / 2) – x) = cos x
KIM [24]

Answer:

Step-by-step explanation:

sin (\frac{\pi}{2} - x) = cos x \\\\ sin (a - b) = sin a.cos b - sin b.cos a \\\\ sin (\frac{\pi}{2} - x) = sin \frac{\pi}{2}.cos x - sin x.cos \frac{\pi}{2} \\\\ sin \frac{\pi}{2} = 1; cos \frac{\pi}{2} = 0 \\\\ sin (\frac{\pi}{2} - x) = 1.cos x - sin x.0 \\\\ sin (\frac{\pi}{2} - x) = cos x

I hope I helped you.

4 0
3 years ago
Tami read 12.0045 as "twelve and forty-five thousands". is she correct?
Softa [21]
No is twelve and forty-five ten thousandths
3 0
3 years ago
Rafeal wants to know if there is a single transformation that will move trapezoid JKLM onto trapezoid PQRS Below
aliina [53]

A. A 90° counterclockwise rotation of trapezoid JKLM about the origin will move angle L onto angle R.

Step-by-step explanation:

Since both the trapezoids, trapezoid JKLM and PQRS are congruent, we can do any transformation, may be rotation, reflection and translation.

A 90° counterclockwise rotation of trapezoid JKLM about the origin will move angle L onto angle R is the true statement others are incorrect statements.

When the Preimage is rotated 90° counterclockwise rotation, then its coordinates (x,y) changed into (-y,x)  

8 0
3 years ago
Gordo is a fisherman. Darrin claims that Gordo over-estimates the size of his fish by 25%.
White raven [17]

Answer:

The answer will be 30cm

Because 40 divided by 4 is 10 and times it by 3

8 0
2 years ago
What is the median of this set of data:593,588,540,434,420,398,390,375
devlian [24]

Answer:

427

Step-by-step explanation:

5 0
2 years ago
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